1)Introduction

Introduction
Most motor applications require the use of remote control devices to start and stop the motor. Magnetic contactors (similar to the ones shown below) are commonly used to provide this function. Contactors are also used to control distribution of power in lighting and heating circuits.

Types of contactors

• Power contactors

• Auxiliary contactors

• Capacitor duty contactors

• Hoist Duty contactors

• Solid state contactors




Fig:Different types of contactors




In this Article following points are discussed in details


1) ABC of contactors

2)Over voltage damping circuit used in contactors their advantages & disadvantages

3) Reasons for welding of contacts in contactors

4) Maintenance guidelines of contactors

5) Dos & donts

6)Procedure for milivolt drop test

7)Capacitor duty contactors

8)Problen & soluation in capacitor duty contactors

9)Communication capable contactors

10)Trouble shooting in contactors

11)FAQs